/*
    Mango - Open Source M2M - http://mango.serotoninsoftware.com
    Copyright (C) 2006-2011 Serotonin Software Technologies Inc.
    @author Matthew Lohbihler
    
    This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package com.serotonin.mango.rt.dataSource.http;

import java.util.concurrent.CopyOnWriteArraySet;

import com.serotonin.util.IpAddressUtils;
import com.serotonin.util.IpWhiteListException;
import com.serotonin.util.StringUtils;

/**
 * @author Matthew Lohbihler
 */
public class HttpReceiverMulticaster {
    private final CopyOnWriteArraySet<HttpMulticastListener> listeners = new CopyOnWriteArraySet<HttpMulticastListener>();

    public void addListener(HttpMulticastListener l) {
        listeners.add(l);
    }

    public void removeListener(HttpMulticastListener l) {
        listeners.remove(l);
    }

    public void multicast(HttpReceiverData data) {
        for (HttpMulticastListener l : listeners) {
            // Check if the listener cares about stuff from this ip address.
            try {
                if (!IpAddressUtils.ipWhiteListCheck(l.getIpWhiteList(), data.getRemoteIp()))
                    continue;
            }
            catch (IpWhiteListException e) {
                l.ipWhiteListError(e.getMessage());
                continue;
            }

            // Check if the listener cares about stuff from this device id.
            if (!StringUtils.isEmpty(data.getDeviceId())) {
                if (!StringUtils.globWhiteListMatchIgnoreCase(l.getDeviceIdWhiteList(), data.getDeviceId()))
                    continue;
            }

            // Everything checks out, so tell the listener about this data.
            l.data(data);
        }
    }
}
